FTIR.fun FTIR.fun ทำให้การวิเคราะห์ FTIR ง่ายขึ้น
หน้าที่ผลลัพธ์

ester-containing organic material with aliphatic C-H bands

ดูรายงานด้านบน ใช้ความคิดเห็นด้านล่างหากคุณต้องการพูดคุยติดตามผล

หมายเลขผลลัพธ์: 20250523103046505648076 เจ้าของ: publicuser ความคิดเห็น: 1
  • Translating report into ภาษาไทย. English is shown for now.
FTIR ANALYSIS REPORT

FTIR Spectrum Analysis Report

No.: 20250523103046505648076 Date: 2025-05-23 12:37:10 Reported by: FTIR.fun Contact: [email protected]

Download a professional, formatted PDF of this analysis.

Top15

Similarity-ranked Top-15 library comparison

Choose matching result groups:
Library spectrum will appear here.
Library spectrum Interactive sample curve Move the pointer to show the vertical guide line.
Top 15 candidates

Reference library candidates

Rank Match % Compound Name Formula / SMILES Library preview Action
Reference candidates load with this Top-15 workbench.

Based on the library matches and evidence above.

Conclusion

ester-containing organic material with aliphatic C-H bands

General assessment
-
#57605 Initial rank 1 Current rank 1 Library lead match 0.0%
Conclusion
  1. The combination of 1737 and 1236 cm-1 is consistent with an ester motif.
  2. The 2920 and 2853 cm-1 absorptions support saturated or largely aliphatic C-H environments.
  3. The leading library candidate, methyl prop-2-ynoate, is at least chemically consistent with having an ester carbonyl and C-O bond.
Main limitation

The reference library comparison is not discriminating: the top candidates are chemically inconsistent with one another and all have similarity reported as 0.000.

Evidence & interpretation
Evidence

Key evidence

การจับคู่หลักของคลังข้อมูล
methyl prop-2-ynoate #57605 | match 0.0%
ทิศทางของวัสดุ
ester-containing organic material with aliphatic C-H bands The FTIR evidence does not support a confident assignment to methyl prop-2-ynoate as a specific compound. The observed spectrum is more securely described as an ester-containing organic material showing aliphatic C-H absorption. The strongest sample bands are a carbonyl near 1737 cm-1, a C-O-related band near 1236 cm-1, and alkyl C-H stretches near 2920 and 2853 cm-1, which together are consistent with an aliphatic ester or ester-bearing component. The library match is weak, all reported similarities are effectively zero, and no direct or related literature evidence independently narrows the result.
Support

Evidence supporting the conclusion

Only sample-relevant statements that support the present conclusion are shown here.

  1. The combination of 1737 and 1236 cm-1 is consistent with an ester motif.
  2. The 2920 and 2853 cm-1 absorptions support saturated or largely aliphatic C-H environments.
  3. The leading library candidate, methyl prop-2-ynoate, is at least chemically consistent with having an ester carbonyl and C-O bond.
  4. A strong band at 1737 cm-1 is characteristic of an ester-range carbonyl absorption.
  5. The 1236 cm-1 band is consistent with C-O stretching expected for an ester functionality.
  6. Bands at 2920 and 2853 cm-1 support aliphatic C-H stretching from an alkyl-containing organic material.
  7. The sample evidence therefore supports an ester-containing aliphatic organic composition more reliably than a specific named compound.
Limitations

Evidence that limits the conclusion

  • The reference library comparison is not discriminating: the top candidates are chemically inconsistent with one another and all have similarity reported as 0.000.
  • The Top-15 pattern includes halogenated, hydrocarbon, sulfur-containing, aromatic, and ester candidates, so it does not provide a coherent narrow material class beyond a very broad organic direction.
  • The sample peaks do not provide clear supporting evidence for the specific alkyne feature required by methyl prop-2-ynoate.
  • The present peak list is short and may omit weaker but important distinguishing bands.
  • Without confirmed evidence for an alkyne, halogen, aromatic ring, nitrogen functionality, or other defining groups, multiple ester-containing organics remain plausible.
  • The current evidence supports functional-group level interpretation better than exact molecular identification.
Recommendation

Suggested next verification

  • Reacquire the FTIR spectrum over the full range with good signal-to-noise and inspect the fingerprint region in more detail, especially 1000-1500 cm-1.
  • Check specifically for alkyne-related absorption near 2100-2200 cm-1 and any terminal alkyne C-H near ~3300 cm-1 if methyl prop-2-ynoate is being considered.
  • Compare against authenticated spectra of simple aliphatic esters rather than relying on the current weak top hit alone.
  • If available, use GC-MS or LC-MS to determine whether the sample is a single low-molecular-weight ester or a component within a mixture.
Peak analysis

Detected peaks and interpretation

★ = Literature-supported peak assignment.

Index Characteristic Wavenumber Absorbance Evidence One-line interpretation Citation Confidence
1 · 1236 1.00 - - - -
2 · 1737 0.38 - - - -
3 · 2920 0.27 - - - -
4 · 2853 0.16 - - - -
Appendix

Sample information and raw spectrum

Original uploaded spectrum for reference and verification.

Baseline correction method: Asymmetric Least Squares Smoothing

The wavelength range for analysis(cm-1): [(650, 4000)]

Raw spectrum without baseline correction or other processing:

Sample spectrum image
การอภิปราย

ความคิดเห็นและหลักฐานเพิ่มเติม

ใช้พื้นที่นี้เพื่อดำเนินการตีความต่อ ถามคำถาม หรือเพิ่มหลักฐานการตรวจสอบเพิ่มเติม

Admin  จาก : Seattle, United States
  • 23 พ.ค. '25

The above shows the FTIR analysis results of a PDF file uploaded by a user (IP: 217.XX ). The original image is displayed below.20250523202955.png CSV FILE:tem.csv

en&2
  • หน้า 1 จาก 1
ตอบกลับ
หัวข้อที่เกี่ยวข้อง

การวิเคราะห์อื่นๆ ในหมวดนี้

ส่งคำขอ แบบฟอร์ม